new info for RestoreTargetFolder

Author: mchiro

exchange/exchange-ps/exchange/Restore-RecoverableItems.md

@@ -310,7 +310,23 @@ Accept wildcard characters: False
 ### -RestoreTargetFolder
 This parameter is available only in the cloud-based service.
 
-The RestoreTargetFolder parameter specifies the top-level folder in which to restore data. If you don't specify this parameter, the command restores folders to the top of the folder structure in the target mailbox or archive. This paramater is a required when restoring from archive. Content is merged under existing folders, and new folders are created if they don't already exist in the target folder structure.
+The RestoreTargetFolder parameter specifies the top-level folder in which to restore data. If you don't specify this parameter, the command restores folders to the top of the folder structure in the target mailbox or archive. Content is merged under existing folders, and new folders are created if they don't already exist in the target folder structure.
+
+##### Destination folder path to restore items 
+This parameter is mandatory for archives and optional for primary mailboxes. Destination folder will be created if it does not exist.
+Valid paths are:
+```
+/
+
+/folder1
+
+/folder1/folder2
+
+folder1
+
+folder1/folder2
+```
+The preceding or trailing `/` will be ignored. Then, it will be treated as the relative path of the IPM sub-tree `/Top Of Information Store`
 
 ```yaml
 Type: String